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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Depository for semen during insemination. where urine leaves the body






2. 2 month growth cycle. stored in the epididymis of the bull






3. Actual heat cycle (period)






4. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






5. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






6. Allows extension of penis without fibro-elastic penis






7. Milk ~305 days - dry 60 days prior to calving






8. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






9. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






10. 26 hours after estrus begins






11. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






12. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






13. Duct through penis that carries sperm and urine






14. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






15. 1-2 days






16. Depository for semen during insemination. where urine leaves the body






17. Why Dairy calves are fed powdered milk.






18. 19-23 (21) days






19. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






20. (male) pushes the testes outward toward the legs for a cool-down off of the body






21. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






22. Microscopic - make sure not sterile - very few bulls are actually tested






23. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






24. 30-38 hours after estrus cycle begins






25. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






26. 10-37 (21) days






27. 30 hours after estrus begins






28. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






29. What about the sperm for a bull which has been castrated but still has testicles?






30. What about the sperm for a bull which has been castrated but still has testicles?






31. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






32. Failure to have one testis (gonad) to descend






33. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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34. Important 'landmark' during palpation






35. (FSH) causes egg to mature in females






36. Sperm production






37. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






38. (male) pushes the testes upward toward the body for warmth or protection






39. What makes the milk flow through the mammary glands?






40. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






41. Look for infection - split - and rupture of the penis






42. Not under a timeline - cow can not be sold as steak






43. 1-3 days






44. 10-37 (21) days






45. FEED






46. 265-285 days






47. Milk is 15% ________ and 85% __________.






48. Allows extension of penis without fibro-elastic penis






49. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






50. Prevent the cow from getting an infection from the calve